[clang] [clang][bytecode] Handle __builtin_wcslen (PR #119187)

[Timm Baeder via cfe-commits]

================
@@ -256,15 +256,28 @@ static bool interp__builtin_strlen(InterpState &S, 
CodePtr OpPC,
     return false;
 
   assert(StrPtr.getFieldDesc()->isPrimitiveArray());
-
+  unsigned ElemSize = StrPtr.getFieldDesc()->getElemSize();
   size_t Len = 0;
   for (size_t I = StrPtr.getIndex();; ++I, ++Len) {
     const Pointer &ElemPtr = StrPtr.atIndex(I);
 
     if (!CheckRange(S, OpPC, ElemPtr, AK_Read))
       return false;
 
-    uint8_t Val = ElemPtr.deref<uint8_t>();
+    uint32_t Val;
----------------
tbaederr wrote:

Done

https://github.com/llvm/llvm-project/pull/119187
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